Sensitivity of our observations in terms of contrast with respect to the host star for the whole survey. Top panels: detection limits from SPHERE-IRDIS in the H23 (on the left) and K12 (on the right) bands for ANDROMEDA-ADI, ANDROMEDA-ASDI, SpeCal-TLOCI ADI and SpeCal-cADI post-processing. Bottom panels: detection limits from SPHERE-IFS in YJ (on the left) and in YJH (on the right) for ANDROMEDA-ASDI and SpeCal-PCA-ASDI reductions. The detection limits are given as a function of the separation to the star, also expressed as semi-major axis for systems located at 5 pc, following semi-major axis (au) = separation (") × distance (pc).